Baling press



May 23, 1961 N. B. HILLSTROM BALING PRESS 3 Sheets-Sheet 1 Filed Feb. 3, 1958 INVENTOR NILS B. HILLSTROM ATTORNEYS y 23, 1961 N. B. HILLSTROM 2,985,101

BALING PRESS Filed Feb. 5, 1958 s Sheets-Sheet 2 INVENTOR NILS B.H|L.LSTROM ATTORNEYS United States Patent BALING PRESS Nils B. Hillstrom, Milwaukee, Wis., assignor to Galland- Henning Manufacturing Company, Milwaukee, Wis., a corporation Filed Feb. 3, 1958, Ser. No. 712,710

1 Claim. (Cl. 100-218) This invention appertains to baling presses and more particularly to heavy duty hydraulic presses for baling bulky scrap metal.

Such baling presses are of the multiple operation type and include a primary compression ram operating longitudinally of the scrap box; a secondary compression ram at one end of the box operating in a vertical plane, and a final compression ram at the same end of the box as the vertical ram and operating transversely of the box.

Much difliculty has been encountered in the final compression of the bale and the ejecting of the completed bale from the box. It has been proposed to provide a laterally extending compression chamber at the end of the box and to close the ejecting opening of the chamber by a horizontally sliding gate. The size of the ejecting opening is limited to the size of the compression chamber and consequently, where fins are formed on the bale by the compression rams, such fins catch in the door opening causing great difficulty. Likewise, the heavy framing for the horizontally sliding gate tends to restrict the active size of the'opening, and out of necessity the horizontal gate supported by such framing is out of line with the adjacent side wall of the box forming an objectionable pocket.

It is, therefore, one of the primary objects of my invention to provide the ejecting opening for the bale in the side wall of the box directly opposite the third or final compression ram, with a vertical sliding gate having its inner face in a straight line with the inner surface of the side wall, whereby an ejecting opening of a desired size can be had which is not limited to thedimension of the bale, so that thebale can. be easily ejected without catching in the door opening, and whereby all projecting pockets and chambers are eliminated.

Another salient object of the invention is the provision of means whereby the third or final compression ram can move entirely through the ejecting opening so as to insure the complete ejecting of the completed bale through the opening and out of the box.

A further important object of my invention is the provision of a novel box construction for amply supporting the vertically moving gate and for resisting heavy compression pressure against the gate.

A still further important object of my invention is the provision of novel removable wear strips on all four corners of the gate whereby said strips can be easily replaced when wear takes place.

A still further import-ant object of the invention is the provision of means for supporting and sliding the gate whereby all frame members for the gate will be eliminated from projecting into the opening and to permit a smooth bottom surface without any frame members whatsoever so as to permit the free sliding of the lower surface of the bale.

With these and other objects in View, the invention consists in the novel construction, arrangement and formation of parts, as will be more specifically described and claimed Patented May 23, 1961 and illustrated in the accompanying drawings, in which drawings,

Figure 1 is a fragmentary side elevational view of a baling press constructed in accordance with my invention, the view being somewhat of a diagrammatic nature;

Figure 2 is a transverse vertical sectional view through the press taken on the line 2-2 of Figure 1, looking in the direction of the arrows, the view illustrating the no vel arrangement of the vertical sliding gate, with the gate in its raised position and with a bale ejected through the ejecting opening, and

Figure 3 is a horizontal sectional view through the press taken on the line 3-3 of Figure 2, looking in the direction of the arrows, the view illustrating the mounting of the gate in the frame of the press.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter P generally indicates the baling press and the same includes a rugged frame 5 fabricated to form a scrap metal receiving box 6. The inner faces of the box may be lined with wear plates, either corrugated or smooth. The upper end of the box is open to receive the bulky scrap and the upper end of the box when loaded is closed by a cover 7. The cover, as illustrated is hinged and is opened and closed by a hydraulically operated mechanism 8. The box can be provided with a loading hopper (not shown). The box includes a bottom wall 9, side walls 10 and 11 and a rigid end wall 12.

Operating longitudinally of the box is a first or primary hydraulic ram 13 and this ram moves toward and away from the rigid end wall 12 of the frame. Slidably mounted in the box adjacent to the end wall 12 is a vertically moving second hydraulically operated compression ram 14. Slidable through the side wall 11 is a transversely movable horizontally disposed third or final hydraulically operated compression ram 15. This ram engages the lower wall 9 of the box and the end wall 12 of thebox.

In operation all of the rams are moved to their r etracted positions and the scrap is dumped into the box; after which the cover 7 is swung to its closed position. The first or primary ram 13 is operated andthe same moves toward the end wall 12 crushing andcomp'actingthe scrap against the wall. Thesecondary ram 14 is now lowered further crushing and compacting the gbale and finally, the third compression :ramgs operated,furthercrushingand compacting the baleto its final form.

In accordance with my invention, I form directly in the side wall 10 and directly opposite the ram 15 an ejecting opening 16. By referring to Figure 2, it can be seen that the floor or bottom wall 9 of the box extends under the opening 16 to provide a smooth sliding surface for the bale. In view of the fact that the opening 16 is formed directly in the side wall 10, the size of the opening 16 is not restricted to the size of the bale and consequently, the opening 16 is of a greater width and height than the bale being formed and also of a greater width and height than the third or final compression ram 15. Thus, an adequate size opening is had which permits the free sliding of a bale therethrough, without danger of any projecting fins or the like which may be formed on the bale catching in the sides and top of the gate opening.

The frame of the baling press can be formed in a special manner at the gate opening, so as to form an ample support for receiving a vertically sliding gate 17 which forms an important part of my invention. Thus, the side wall 10 on each side of the opening 16 has cast, or otherwise formed thereon, spaced upright columns 18 and 19. These columns also form an ideal means for receiving the spaced vertically extending tie rods 20 employed for uniting certain frame members together. The inner faces of the columns 18 and 19 have formed therein vertically extending guide grooves 21 for the gate 17 and the corners of the guide grooves or ways 21 have rigidly fastened thereto upright angle wear members or tracks 22 for the corners of the gate. The corners of the gate itself are provided with removable wear plates 23'which slidably contact the wear tracks 22. It is to be noted that the corner wear plates are set in the faces of the gate and that the inner wear face of the gate is in line with the inner face of the wall 10, and actually forms a continuation of this wall. The inner face of the gate 17 can also be provided with a wear plate 24, should such be desired. The gate 17 is raised and lowered by a hydraulically operated mechanism 25. This mechanism can include a cylinder 26 and a piston rod 27. The upper end of the gate 17 has formed thereon a transversely extending rib 28 and the piston 27 is firmly united with the rib. By referring to Figures 1 and 2, it can be seen that the gate 17 is raised to a position well above the ram 15 and to a position well in excess of the height of the bale formed.

With the gate 17 in its closed position resting on the bottom wall 9 and with the third compression ram in the position shown in Figures 1 and 2, then the first and secondary rams 13 and 14 are released, after which the gate 17 is opened. The ram 15 is now further operated so as to move the formed bale completely through and beyond the door opening 16. The ram 15 is now returned to its completely retracted position, and the gate 17 is closed. The press is now ready to receive another charge and the cycle of operation is repeated.

Great stress is laid on the construction of the gate 17 and the mounting thereof within the side wall of the box and the columns 18 and 19. The vertical edges of the gate 17 are received directly within the columns and hence the columns resist compression strains transmitted thereto by the gate 17 during the compression stroke of the third compression ram. As the bottom wall 9 of the box actually continues through the ejecting opening, the bottom of the bale can slide freely through the ejecting opening and a smooth surface is formed in the press for the bale. As the bale is formed against the end wall 12, this side of the bale will be comparatively smooth and will not have any projecting parts or fins. As the opening 16 is actually of a greater size than the bale no difl'iculty is encountered in the movement of the bale through the ejecting opening 16. It is again stressed, that with my vertically moving gate the inner face thereof is brought in a direct straight line with the inner face of the adjacent side wall of the box of the press, thereby vided with vertically extending guide grooves, and a vertically movable gate for closing said opening having laterally projecting guide ribs extending into the guide grooves, the inner face of said gate forming a continuation of the adjacent side wall and being in line with the inner face of said side wall, removable wear strips on the corners of the gate slidably engaging the walls of the guide grooves, removable upright wear tracks carried by the walls of the guide grooves, removable wear strips on the ribs of the gate slidably engaging said wear tracks, a ram horizontally movable in the box toward the end 1 wall to compress a charge of material in the box between itself and the end wall to bring the bulk of the charge into alignment with the opening, a second compression ram disposed adjacent to the end wall vertically movable in the box toward the bottom wall forrfurther compress- 'ing the charge, and a third compression ram movable transversely of the box toward the opening and the gate for finally compacting the charge, said opening being of a substantially greater size than the transverse dimension of the third compression ram and the transverse dimension of the finally compacted bale, said third compression ram being movable entirely through said opening when the gate is raised for ejecting a completed compacted bale entirely through and beyond said opening.

References Cited in the file of this patent UNITED STATES PATENTS 717,064 Allender et al. Dec. 30, 1902 856,445 Coifman June 11, 1907 1,540,784 Langford June 9, 1925 1,932,041 Jacobson Oct. 24, 1933 2,295,287 Muench Sept. 8, 1942 2,748,694 Thompson June 5, 1956 FOREIGN PATENTS 908,447 Germany Apr. 5, 1954 

